The Metamorphosis (in German, Die Verwandlung, “The Transformation”) is a novella by Franz Kafka, first published in 1915, and arguably the most famous of his works along with the longer works The Trial and The Castle.

Plato's account of Socrates' defense at his trial for "corrupting the youth" is a classic summation of his teacher's life and mission, centered in Socrates' most famous line, "The unexamined life is not worth living."